第二次世界大戰後,美國、前蘇聯及其他國家在1951-1963年之間分別在地面上進行數以百計的核試,428Please respect copyright.PENANA8HHGo0JGvI428Please respect copyright.PENANAq0now5EhG9
428Please respect copyright.PENANALQvY1fjLOG
直至1963年大家互相簽署了停止核試條約,地面引爆核試才得以終止進行;雖然1960-1970年間中國及非洲仍有進行少量微型地面核試。428Please respect copyright.PENANAdUfGpmpYbY
428Please respect copyright.PENANAFL7I2tZwfU
地面核試,無疑會為大自然界帶來影響。428Please respect copyright.PENANAVOkeSq7Snt
其中一隻名為137Cs的幅射性原子,不但能對生物帶來傷害,且具有水溶性特質,其半衰期亦達30.2年之多;428Please respect copyright.PENANAeredUCFXso
亦即是說渡過30.2年之後,其濃度才會自然地減半。428Please respect copyright.PENANAAB8Lzln4wF
428Please respect copyright.PENANAwwdf9hWsB5
428Please respect copyright.PENANAnxS5aV4e7K
(圖2)植物普遍需要鉀元素(K)輔助生長,因此天生擁有相應的蛋白質負責吸取泥土的鉀元素。428Please respect copyright.PENANAkAjOLoCPw7428Please respect copyright.PENANAyfXIcsJoi2
428Please respect copyright.PENANAWjMzggSxEu
然而基於137Cs與K的特質非常相似,植物不其然間亦會因而吸取了帶有幅射性的137Cs原子。428Please respect copyright.PENANAAzRv3co8ws
428Please respect copyright.PENANArc7glpKFVX
如果往植物施上含鉀元素(K)或銨 (NH4)的肥料,均可大幅度減低植物吸取泥土間137Cs的效率。428Please respect copyright.PENANAHH91vYOBeE
428Please respect copyright.PENANAwbgizrmwfv
428Please respect copyright.PENANAM2Cm4Wknrp
(圖3)科學家審視2017-2019年美國各地的蜜糖商品,發現122個樣本中並有68個樣本測量出137Cs的存在。428Please respect copyright.PENANA3vJJsRgXiC428Please respect copyright.PENANAEI6gGlTE5Z
428Please respect copyright.PENANAqePKH54ggp
不過其含量非常之低,平均僅約0.03Bq 137Cs kg−1,最高濃度的樣本為19Bq 137Cs kg−1,依然遠低於美國FDA制定的1200Bq 137Cs kg−1安全界線。428Please respect copyright.PENANAIp8PVj9HJd
428Please respect copyright.PENANAjFcLwEVdzS
研究還發現,當地蜜糖樣本是否含有137Cs原子,與當地泥土的137Cs含量並無任何關連。428Please respect copyright.PENANA7ihPxHn2Cx
428Please respect copyright.PENANAVbJMiEfhxy
428Please respect copyright.PENANAzcZFoV2v6O
無論如何,核廢理的處理與人類生活健康的議題,均需密切關注,不容忽視。428Please respect copyright.PENANAnUEQ9DNWla
428Please respect copyright.PENANA2BruNSh5n4
428Please respect copyright.PENANAqhMTDUYpyJ
428Please respect copyright.PENANAPGBf7tDPKH
428Please respect copyright.PENANAoDEWm4HIP8
428Please respect copyright.PENANAMQoq7cwWIh
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。428Please respect copyright.PENANAlEDPRUtw4B
428Please respect copyright.PENANAFvaqjmt5iD
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc428Please respect copyright.PENANA1IJZcaFaPm
428Please respect copyright.PENANADixcSL65df
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。428Please respect copyright.PENANAurgTkTGGQg
428Please respect copyright.PENANAooFYlNtrxp
Link:428Please respect copyright.PENANAy6NNTkjm8s
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio428Please respect copyright.PENANACZK3k4G4F5
428Please respect copyright.PENANA0i4X8ozocT
428Please respect copyright.PENANAkopQpPM4WQ
除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。428Please respect copyright.PENANAu7bSbYBi4t
428Please respect copyright.PENANACEuRGBYGRy
Ref1:https://www.nature.com/articles/s41467-021-22081-8#MOESM3428Please respect copyright.PENANA2syu2rgnTE